(!!) (slightly microphonic) 12AX7 Sylvania Zenith black ribbed plates “”D”” getter NOS/80% 1953 (Gm=1300/1400 and 0.9/1.0ma)

1 slightly microphonic low noise tube) 12AX7 Sylvania Zenith black ribbed plates “”D”” getter NOS/80% 1953 in white box

Gm=1300 (0.9ma)

Gm=1400 (1.0ma)

– Fender Champ Reissue 1957
– Fender Deluxe Reverb 1964
– PrimaLuna ProLogue Five Integrated amp